Vis enkel innførsel

dc.contributor.authorStige, Leif Christian
dc.contributor.authorEriksen, Elena
dc.contributor.authorDalpadado, Padmini
dc.contributor.authorOno, Kotaro
dc.date.accessioned2020-03-18T07:55:14Z
dc.date.available2020-03-18T07:55:14Z
dc.date.created2019-09-12T11:04:09Z
dc.date.issued2019
dc.identifier.citationICES Journal of Marine Science. 2019, 76 i24-i36.en_US
dc.identifier.issn1054-3139
dc.identifier.urihttps://hdl.handle.net/11250/2647295
dc.description.abstractReductions in Arctic sea ice affect marine food webs through a multitude of direct and indirect effects. We here analysed direct, indirect, and delayed associations between winter sea ice cover and year-to-year changes in biomasses of the main zooplankton groups (copepods, krill, amphipods) and planktivorous fishes (capelin, polar cod) in the central and northern Barents Sea from 1980 to 2015. Climate effects and species interactions were estimated jointly in a Bayesian state-space model framework. We found that population biomass of capelin increased in years with low sea ice cover, while biomasses of copepods and amphipods decreased. Furthermore, results suggested strong bottom-up effects by krill on capelin and by copepods on amphipods and top-down effects by polar cod on amphipods and by capelin on krill and copepods. Sea ice effects thereby cascaded through the food web through indirect and delayed effects. The indirect and delayed effects amplified the effects of sea ice cover on capelin, copepods and amphipods. For krill, low sea ice cover most likely increased biomass in the short-term but reduced biomass in longer terms because of increased predation pressure. These findings suggest that both bottom-up and top-down processes need to be considered when projecting effects of future climate change on ecosystems.en_US
dc.language.isoengen_US
dc.titleDirect and indirect effects of sea ice cover on major zooplankton groups and planktivorous fishes in the Barents Seaen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionacceptedVersionen_US
dc.source.pagenumberi24-i36en_US
dc.source.volume76en_US
dc.source.journalICES Journal of Marine Scienceen_US
dc.identifier.doi10.1093/icesjms/fsz063
dc.identifier.cristin1723904
dc.relation.projectNorges forskningsråd: 255675en_US
dc.relation.projectNorges forskningsråd: 276730en_US
dc.relation.projectNorges forskningsråd: 228880en_US
cristin.unitcode7431,26,0,0
cristin.unitcode7431,22,0,0
cristin.unitnameØkosystemprosesser
cristin.unitnamePlankton
cristin.ispublishedtrue
cristin.fulltextpostprint
cristin.qualitycode1


Tilhørende fil(er)

Thumbnail
Thumbnail

Denne innførselen finnes i følgende samling(er)

Vis enkel innførsel